Plant Hormones And Growth Regulators

Plant hormones and growth regulators are endogenous and exogenous signaling molecules that control cannabis development, from seedling vigor through flowering and senescence. Key endogenous hormones include auxins, gibberellins, cytokinins, abscisic acid, and ethylene—each governing root initiation, stem elongation, leaf expansion, and reproductive timing. Breeders and cultivators study hormone profiles and synthetic regulator responses to optimize yield architecture, flowering speed, and stress resilience. Understanding how genetic backgrounds interact with hormone signaling informs selection for desired plant structure, branching patterns, and environmental adaptation without relying on unverified performance claims.

Breeders use hormone sensitivity as a selection criterion to develop cultivars with favorable node spacing, internodal length, and flowering synchrony. Genetic lines showing consistent auxin-gibberellin balance or cytokinin responsiveness enable predictable crop uniformity and reduced cultivation variance across growing environments.